/Engine/Source/Editor/DataLayerEditor/Public/DataLayer/DataLayerEditorSubsystem.h
Removes an actor from the specified DataLayer.
true if the actor was removed from the DataLayer. false is returned if the actor already belonged to the DataLayer.
bool RemoveActorFromDataLayer ( [AActor](API\Runtime\Engine\GameFramework\AActor) * Actor, [UDataLayerInstance](API\Runtime\Engine\WorldPartition\DataLayer\UDataLayerInstance) * DataLayerToRemove )